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import * as assert from 'node:assert/strict';
import { before, describe, it } from 'node:test';
import { parseHTML } from 'linkedom';
import { loadFixture } from '../../../astro/test/test-utils.js';
const FIXTURE_ROOT = new URL('./fixtures/mdx-frontmatter-injection/', import.meta.url);
describe('MDX frontmatter injection', () => {
let fixture;
before(async () => {
fixture = await loadFixture({
root: FIXTURE_ROOT,
});
await fixture.build();
});
it('remark supports custom vfile data - get title', async () => {
const frontmatterByPage = JSON.parse(await fixture.readFile('/glob.json'));
const titles = frontmatterByPage.map((frontmatter = {}) => frontmatter.title);
assert.equal(titles.includes('Page 1'), true);
assert.equal(titles.includes('Page 2'), true);
});
it('rehype supports custom vfile data - reading time', async () => {
const frontmatterByPage = JSON.parse(await fixture.readFile('/glob.json'));
const readingTimes = frontmatterByPage.map(
(frontmatter = {}) => frontmatter.injectedReadingTime,
);
assert.equal(readingTimes.length > 0, true);
for (let readingTime of readingTimes) {
assert.notEqual(readingTime, null);
assert.match(readingTime.text, /^\d+ min read/);
}
});
it('allow user frontmatter mutation', async () => {
const frontmatterByPage = JSON.parse(await fixture.readFile('/glob.json'));
const descriptions = frontmatterByPage.map((frontmatter = {}) => frontmatter.description);
assert.equal(
descriptions.includes('Processed by remarkDescription plugin: Page 1 description'),
true,
);
assert.equal(
descriptions.includes('Processed by remarkDescription plugin: Page 2 description'),
true,
);
});
it('passes injected frontmatter to layouts', async () => {
const html1 = await fixture.readFile('/page-1/index.html');
const html2 = await fixture.readFile('/page-2/index.html');
const title1 = parseHTML(html1).document.querySelector('title');
const title2 = parseHTML(html2).document.querySelector('title');
assert.equal(title1.innerHTML, 'Page 1');
assert.equal(title2.innerHTML, 'Page 2');
});
});
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